87 citations · 233 across the 36 of their papers we have counts for
10 papers · 1 filter
Extended Persistent Homology Distinguishes Simple and Complex Contagions with High Accuracy
Vahid Shamsaddini, M. Amin Rahimian
The social contagion literature makes a distinction between simple (independent cascade or bond percolation processes that pass infections through edges) and complex contagions (bo…
Structural Dynamics of Harmful Content Dissemination on WhatsApp
Yuxin Liu, M. Amin Rahimian, Kiran Garimella
WhatsApp, a platform with more than two billion global users, plays a crucial role in digital communication, but also serves as a vector for harmful content such as misinformation,…
Democratic Resilience and Sociotechnical Shocks
M. Amin Rahimian, Michael P. Colaresi
We focus on the potential fragility of democratic elections given modern information-communication technologies (ICT) in the Web 2.0 era. Our work provides an explanation for the c…
Measuring Network Dynamics of Opioid Overdose Deaths in the United States
Kushagra Tiwari, M. Amin Rahimian, Mark S. Roberts +2
The US opioid overdose epidemic has been a major public health concern in recent decades. There has been increasing recognition that its etiology is rooted in part in the social co…
Structural Measures of Resilience for Supply Chains
Marios Papachristou, M. Amin Rahimian, Arash Azadegan
Modern production systems are increasingly defined by dense networks of multi-tier sourcing dependencies, where localized upstream disruptions can cascade into system-wide collapse…
Influence of Repetition through Limited Recall
Jad Sassine, M. Amin Rahimian, Dean Eckles
Decision makers who receive many signals are subject to imperfect recall. This is especially important when learning from feeds that aggregate messages from many senders on social…
When social influence promotes the wisdom of crowds
Abdullah Almaatouq, M. Amin Rahimian, Jason W. Burton +1
Whether, and under what conditions, groups exhibit "crowd wisdom" has been a major focus of research across the social and computational sciences. Much of this work has focused on…
Seeding with Costly Network Information
Dean Eckles, Hossein Esfandiari, Elchanan Mossel +1
We study the task of selecting nodes, in a social network of size , to seed a diffusion with maximum expected spread size, under the independent cascade model with cascade p…
Long ties accelerate noisy threshold-based contagions
Dean Eckles, Elchanan Mossel, M. Amin Rahimian +1
Network structure can affect when and how widely new ideas, products, and behaviors are adopted. In widely-used models of biological contagion, interventions that randomly rewire e…
Learning without Recall: A Case for Log-Linear Learning
Mohammad Amin Rahimian, Ali Jadbabaie
We analyze a model of learning and belief formation in networks in which agents follow Bayes rule yet they do not recall their history of past observations and cannot reason about…